Q: Is 423,855 a Prime Number?

A: No, 423,855 is not a prime number.

Why is 423,855 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 423855 can be evenly divided by 1 3 5 9 15 45 9,419 28,257 47,095 84,771 141,285 and 423,855, with no remainder.

Since 423,855 cannot be divided by just 1 and 423,855, it is not a prime number.

Number	423,853	423,854	423,856	423,857
Prime?	yes	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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